BEGIN {
	FS="\t"
	return_m=1
	#aaa=0
	return_s=0
}

$1 ~ /199502[0-9][0-9]/{
	#print $1 "\n" $2 "\n" $3 "\n" $4 "\n" $5 "\n"
	#print $1 "\t" $2 "\t" $3 "\t" $4 "\t" $5
	if($6 != "") {
		#print $5, $5 + 1
		aaa= ($6 + 1)
		return_m=return_m * aaa
		#print return_s
		#return_m = return_s
	}

	if(substr($1, 1, 4) == "1997" ) print "yes"
}

END {
	print substr($1, 1, 4) " " substr($1, 5, 2) " month return is " return_m 
}
